Just wanted to ask (I found no information on this anywhere), if a 1.65V memory woul be OK for my future sandy bridge platform? The memory in question is optimized for P55 chipset (according to OCZ's website) and I found no info on compatibility for P67, which uses 1.6V memory...

oh and if it's Ok - do you think it would be good memory for an OC (intel 2500K + Gigabyte GA-P67A-UD4)? This memory is CL10 timings - should I rather get something lower on Mhz but tighter on timings?

that's very fast memory, and very expensive for the density you are getting, I have no idea about specific compatibilities but i doubt you would have a problem with sandy and RAM voltages, 1.65v is what some 1600MHz kits run at